When the body of Isla’s brother, an ex-Marine and private investigator, is pulled from the River Clyde, she is convinced he was murdered. When the coroner declares Dougie’s died of accidental drowning and rules out foul play, the police are happy to close the case. But Isla has other ideas. Determined to find out what really happened the night Dougie died, and why he was even in Glasgow, she starts looking into his unsolved cases. What she finds will put her in grave danger and force her to question everything she thought she knew about those closest to her . . .